Common issue on these models is fuser wrap, where a sheet of paper gets wrapped around the fuser, this causes flags in the printer to be tripped permanently. Very hard to see this but if you look from the back around the top you may be able to see if there is paper there. Disassembly is the only way to get the paper out.
If you find the information provided useful or solves your problems, help other users find the solution easier by giving kudos and marking my post as an accepted solution. I am a volunteer, offering my knowledge to support fellow users, I do not work for HP nor speak for HP.
Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".